Vacuum Circuit Breaker
SERIES TIPO VJB
Caracteristicas generales
|
VJB Series 24kV & 36kV |
|||||
|
Item |
Type |
VJB-20M20F |
VJB-20P20F |
VJB-30M13F |
VJB-30P13F |
|
Voltage |
(kV) |
24 |
36 |
||
|
Insulation Level |
(kV) |
AC-50, Impulse-125 |
AC-70, Impulse-170 |
||
|
Current (*1) |
(A) |
1200 / 1250 |
2000 |
1200 / 1250 |
2000 |
|
Frequency |
(Hz) |
50/60 |
|||
|
Interrupting Current |
(kA) |
20 |
12.5 |
||
|
Interrupting Capacity |
(MVA) |
830 |
780 |
||
|
Transient Recovery Voltage |
(kV/ms) |
0.5 |
0.6 |
||
|
Closing (Make) Current |
(kA) |
50 |
31.5 |
||
|
Short Time Withstand Current-2s (kA) |
20 |
||||
|
Opening Time |
(sec) |
0.03 |
|||
|
Interrupting Time |
(cycle) |
3 |
|||
|
Closing Time |
(sec) |
0.25 |
|||
|
Standard Operating Duty |
A (O - 1 min. - CO - 3 min. - CO) |
||||
|
Closing Operation |
Voltage (V) |
DC100 |
|||
|
Current (A) |
90 |
||||
|
Closing Voltage Range |
(V) |
DC 85 ~ 110 |
|||
|
Opening Control |
Voltage (V) |
DC100 |
|||
|
Current (A) |
4.5 |
||||
|
Opening Voltage Range |
DC 60 ~ 125 |
||||
|
Mechanical Life (*2) |
150,000 Times |
||||
|
Electrical Life (*3) |
150,000 Times |
||||
|
Contact Wipe |
(mm) |
7 |
|||
|
Allowable Contact Wear |
(mm) |
3 |
|||
|
Number of Auxiliary Contacts (*4) |
7a-6b (7NO-6NC) |
||||
|
Installation Method |
Floor Mount, Fixed Type |
||||
|
Weight |
(kg/lb) |
520 / 1146 |
|||
|
Applicable Standards |
JEC-2300 / IEC 56 |
||||
|
Notes: |
|||||
|
*1 The rating is fully guaranteed even housed in a dustproof cubicle. |
|||||
|
*2 Replace auxiliary switch, control contacts and auxiliary relay after 75,000 operations. |
|||||
|
*3 Rated interrupting current can be closed and opened 10 times. |
|||||
|
*4 The number of auxiliary switch contacts shown is for externally usable contacts. |
|||||